| Holyhead to Commerce City (Colorado) | 4,447.00 mi (7,156.76 km) |
| Holyhead to Compton (California) | 5,223.66 mi (8,406.67 km) |
| Holyhead to Comstock Park (Michigan) | 3,594.69 mi (5,785.10 km) |
| Holyhead to Concord (California) | 5,107.94 mi (8,220.44 km) |
| Holyhead to Concord (Missouri) | 3,987.58 mi (6,417.40 km) |
| Holyhead to Concord (New Hampshire) | 3,037.23 mi (4,887.96 km) |
| Holyhead to Concord (North Carolina) | 3,758.13 mi (6,048.13 km) |
| Holyhead to Conneaut (Ohio) | 3,449.28 mi (5,551.08 km) |
| Holyhead to Connersville (Indiana) | 3,731.87 mi (6,005.86 km) |
| Holyhead to Conroe (Texas) | 4,601.36 mi (7,405.17 km) |
| Holyhead to Converse (Texas) | 4,753.57 mi (7,650.13 km) |
| Holyhead to Conway (Arkansas) | 4,239.77 mi (6,823.25 km) |
| Holyhead to Conway (Florida) | 4,130.07 mi (6,646.70 km) |
| Holyhead to Conway (South Carolina) | 3,769.40 mi (6,066.26 km) |
| Holyhead to Conyers (Georgia) | 3,977.60 mi (6,401.34 km) |
